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This paper presents an improved power quality permanent magnet brushless DC motor (PMBLDCM) drive for constant speed variable torque loads e.g. people/luggage carrier belts in airport lobbies, conveyor belts in industries etc. A non-isolated single-ended primary inductor converter (SEPIC) is used for power factor correction (PFC) and operated under current multiplier control. SEPIC converter is used...
This paper proposes a boost converter for power quality improvement at input AC mains of a permanent magnet brushless DC motor (PMBLDCM) operated under position sensorless control. Presently hall sensors are used as position sensors in PMBLDCM and its signals are utilized for starting and control of PMBLDCM under various operating conditions. For the position sensorless control, back-EMF signal of...
This paper presents the design, modeling and simulation of a flyback converter based PFC topologies for feeding a permanent magnet brushless DC motor drive (PMBLDCMD). The flyback PFC converter is operated with the current multiplier control and voltage follower control schemes for improvement of power quality (PQ) at ac mains while controlling the operation of PMBLDCMD in wide range of speeds and...
This paper presents various control strategies and operating principle of a buck PFC converter for feeding a PMBLDCMD (Permanent Magnet Brushless DC Motor Drive) in various modes of operation. Detailed design, modeling and simulation of a buck PFC converter fed PMBLDCMD are carried out for wide rang of speed control with PWM current control of the motor. A buck PFC converter is operated with the current...
In this paper an improved power quality buck-boost converter fed permanent magnet brush less DC motor (PMBLDCM) drive is employed for adjustable speed operation of PMBLDCM. A single-phase, single-switch AC-DC converter topology based on non-isolated buck-boost converter is employed for power factor correction (PFC) and operated with voltage follower control in discontinuous conduction mode (DCM) operation...
In this paper a power factor correction (PFC) buck‐boost converter based adjustable speed voltage controlled voltage source inverter (VSI) fed permanent magnet brushless DC motor (PMBLDCM) drive is employed for an air‐conditioning system for the improved energy efficiency. A single‐phase single‐switch AC–DC converter topology based on the buck‐boost converter is employed for PFC which ensures near...
This paper presents a Zeta DC-DC converter as a power factor correction (PFC) converter which is operated in voltage control mode for speed control of a permanent magnet brushless DC motor (PMBLDCM). The proposed converter performs the PFC action and DC link voltage control in single stage and needs only one controller. The current multiplier approach with average current control is employed for PFC...
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